Explanation:
The "Access level" filter in Microsoft Defender for Cloud Apps helps identify how a file is shared, including whether it is shared externally outside the organization.
The "Sensitivity label" filter is used to track files that have been classified with specific Microsoft Purview sensitivity labels, such as Internal only, ensuring that files with internal classifications are properly monitored and protected.
The "Collaborators" filter tracks users who have access but does not indicate external sharing.
The "Matched policy" filter identifies files based on predefined policies but does not directly filter for external sharing or sensitivity labels.